Can you control which order Subfolders are searched?

My current code is working almost perfectly. The only problem is that it doesn't find all the instances of the files existence.

The code should search folders for items in column A, add a unique number and store it in that cell.

Example:
If 04062017003-1 is in column A
And 04062017003-1, 04062017003-2, 04062017003-3
all exist in the folders being searched, it should change the cell contents to 04062017003-4

I believe that if the search was done from the first subfolder to the last then the desired results would be produced. (In the example: 04062017003-3 could never exist prior to 04062017003-2 or 04062017003-1)

Folders are arranged in this manner
...2017
...2017\2017-01
...2017\2017-01\2017-01-01
2017-01-02
2017-01-03
2017-01-04
2017-01-05
2017-01-06
2017-01-07
2017-01-08
2017-01-09
2017-01-10
2017-01-11
2017-01-12
2017-01-13
2017-01-14
2017-01-15
2017-01-16
2017-01-17
2017-01-18
2017-01-19
2017-01-20
2017-01-21
2017-01-22
2017-01-23
2017-01-24
2017-01-25
2017-01-26
2017-01-27
2017-01-28
2017-01-29
2017-01-30
...2017\2017-02
...2017\2017-02\2017-02-01
2017-02-02
2017-02-03
2017-02-04
2017-02-05
2017-02-06
2017-02-07
2017-02-08
2017-02-09
2017-02-10
2017-02-11
2017-02-12
2017-02-13
2017-02-14
2017-02-15
2017-02-16
2017-02-17
2017-02-18
2017-02-19
2017-02-20
2017-02-21
2017-02-22
2017-02-23
2017-02-24
2017-02-25
2017-02-26
2017-02-27
2017-02-28
2017-02-29
2017-02-30

And so on...

Here is my current code:

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With a form

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Here is a sample (from the start) of the order the code is currently searching in
….2017\2017-07

….2017\2017-07\2017-07-09

….2017\2017-07\2017-07-28

….2017\2017-07\2017-07-25

….2017\2017-07\2017-07-20

….2017\2017-07\2017-07-15

….2017\2017-07\2017-07-23

….2017\2017-07\2017-07-02

….2017\2017-07\2017-07-11

….2017\2017-07\2017-07-27

….2017\2017-07\2017-07-13

….2017\2017-07\2017-07-16

….2017\2017-07\2017-07-30

….2017\2017-07\2017-07-01

….2017\2017-07\2017-07-04

….2017\2017-07\2017-07-24

….2017\2017-07\2017-07-31

….2017\2017-07\2017-07-29

….2017\2017-07\2017-07-05

….2017\2017-07\2017-07-22

….2017\2017-07\2017-07-10

….2017\2017-07\2017-07-07

….2017\2017-07\2017-07-03

….2017\2017-07\2017-07-06

….2017\2017-07\2017-07-12

….2017\2017-07\2017-07-18

….2017\2017-07\2017-07-08

….2017\2017-07\2017-07-17

….2017\2017-07\2017-07-21

….2017\2017-07\2017-07-26

….2017\2017-07\2017-07-19

….2017\2017-07\2017-07-14

….2017\2017-07\2017-09

….2017\2017-07\2017-09-05

….2017\2017-07\2017-09-17

….2017\2017-07\2017-09-01

….2017\2017-07\2017-09-25

….2017\2017-07\2017-09-15

….2017\2017-07\2017-09-06

….2017\2017-07\2017-09-13

….2017\2017-07\2017-09-09

….2017\2017-07\2017-09-08

….2017\2017-07\2017-09-04

….2017\2017-07\2017-09-10

….2017\2017-07\2017-09-30

….2017\2017-07\2017-09-03

….2017\2017-07\2017-09-19

….2017\2017-07\2017-09-24

….2017\2017-07\2017-09-14

….2017\2017-07\2017-09-28

….2017\2017-07\2017-09-21

….2017\2017-07\2017-09-22

….2017\2017-07\2017-09-26

….2017\2017-07\2017-09-02

….2017\2017-07\2017-09-23

….2017\2017-07\2017-09-18

….2017\2017-07\2017-09-16

….2017\2017-07\2017-09-12

….2017\2017-07\2017-09-20

….2017\2017-07\2017-09-29

….2017\2017-07\2017-09-27

….2017\2017-07\2017-09-11

….2017\2017-07\2017-09-07

….2017\2017-08

….2017\2017-07\2017-08-05

….2017\2017-07\2017-08-29

….2017\2017-07\2017-08-18

….2017\2017-07\2017-08-31

….2017\2017-07\2017-08-17

….2017\2017-07\2017-08-06

….2017\2017-07\2017-08-25

….2017\2017-07\2017-08-11

….2017\2017-07\2017-08-20

….2017\2017-07\2017-08-19

….2017\2017-07\2017-08-12

….2017\2017-07\2017-08-03

….2017\2017-07\2017-08-13

….2017\2017-07\2017-08-04

….2017\2017-07\2017-08-09

….2017\2017-07\2017-08-10

….2017\2017-07\2017-08-27

….2017\2017-07\2017-08-16

….2017\2017-07\2017-08-23

….2017\2017-07\2017-08-22

….2017\2017-07\2017-08-15

….2017\2017-07\2017-08-07

….2017\2017-07\2017-08-02

….2017\2017-07\2017-08-24

….2017\2017-07\2017-08-30

….2017\2017-07\2017-08-21

….2017\2017-07\2017-08-01

….2017\2017-07\2017-08-26

….2017\2017-07\2017-08-14

….2017\2017-07\2017-08-08

….2017\2017-07\2017-08-28

….2017\2017-07\2017-04

….2017\2017-07\2017-04-18

….2017\2017-07\2017-04-11

….2017\2017-07\2017-04-21

….2017\2017-07\2017-04-23

….2017\2017-07\2017-04-25

….2017\2017-07\2017-04-17

….2017\2017-07\2017-04-26

….2017\2017-07\2017-04-22

….2017\2017-07\2017-04-09

….2017\2017-07\2017-04-01

….2017\2017-07\2017-04-12

….2017\2017-07\2017-04-10

….2017\2017-07\2017-04-20

….2017\2017-07\2017-04-02

….2017\2017-07\2017-04-05

….2017\2017-07\2017-04-28

….2017\2017-07\2017-04-08

….2017\2017-07\2017-04-19

….2017\2017-07\2017-04-30

….2017\2017-07\2017-04-06

….2017\2017-07\2017-04-15

….2017\2017-07\2017-04-16

….2017\2017-07\2017-04-27

….2017\2017-07\2017-04-29

….2017\2017-07\2017-04-04

….2017\2017-07\2017-04-03

….2017\2017-07\2017-04-14

….2017\2017-07\2017-04-13

….2017\2017-07\2017-04-24

….2017\2017-07\2017-04-07

Yes it is, the file names are always 11 digits

The file name is based on the date the "package" was issued. then the "-" is the number of times it has been inspected.

So the filenames are "package issued date" & "inspection number"

This and the file location was not designed by me, and I personally don't like the arrangement, this is how its been done historically, and I'm trying to work with what I got.

I can think of only a couple solutions then, none of which I have the ability to write the code for.

Option A:
If file is found, start search from beginning again, do this until not found

Option B:
Use a reverse order (we should never have a -8), Search for "filename" & "-8", if not found search for "filename" & "-7",...etc until say, "filename" &"-3" was found, then rename cell "-4"

Option C
Some crazy search that searches for the first 11 digits and through some wizardry defines a unique "-" number.

Edit to Option B:
there has never been a -6, so we could start there

This is actually the method I would prefer, I think it may produce the quickest result.